My cat chases his tail. He dips it in the bath, jumps down then chases his wet tail round and around flinging water everywhere. Then he jumps back up on the bath, dips it in again and repeats this over and over until I get out of the bath.
I remember one episode of Law & Order where the detectives were slagging off CSI officers saying something like "they think they're detectives but they're really just lab geeks, they should leave the detective work to the detectives".